全文获取类型
收费全文 | 9574篇 |
免费 | 48篇 |
国内免费 | 12篇 |
专业分类
教育 | 6438篇 |
科学研究 | 1060篇 |
各国文化 | 92篇 |
体育 | 1012篇 |
综合类 | 6篇 |
文化理论 | 96篇 |
信息传播 | 930篇 |
出版年
2021年 | 78篇 |
2020年 | 137篇 |
2019年 | 191篇 |
2018年 | 239篇 |
2017年 | 258篇 |
2016年 | 232篇 |
2015年 | 156篇 |
2014年 | 220篇 |
2013年 | 1730篇 |
2012年 | 205篇 |
2011年 | 198篇 |
2010年 | 172篇 |
2009年 | 158篇 |
2008年 | 174篇 |
2007年 | 196篇 |
2006年 | 163篇 |
2005年 | 151篇 |
2004年 | 140篇 |
2003年 | 171篇 |
2002年 | 139篇 |
2001年 | 157篇 |
2000年 | 157篇 |
1999年 | 156篇 |
1998年 | 73篇 |
1997年 | 76篇 |
1996年 | 109篇 |
1995年 | 77篇 |
1994年 | 97篇 |
1993年 | 89篇 |
1992年 | 154篇 |
1991年 | 147篇 |
1990年 | 137篇 |
1989年 | 137篇 |
1988年 | 114篇 |
1987年 | 118篇 |
1986年 | 139篇 |
1985年 | 134篇 |
1984年 | 108篇 |
1983年 | 130篇 |
1982年 | 112篇 |
1981年 | 104篇 |
1980年 | 93篇 |
1979年 | 167篇 |
1978年 | 111篇 |
1977年 | 111篇 |
1976年 | 107篇 |
1975年 | 80篇 |
1974年 | 90篇 |
1972年 | 70篇 |
1971年 | 70篇 |
排序方式: 共有9634条查询结果,搜索用时 15 毫秒
161.
A total of 247 American children between 6 and 10 years of age (126 girls and 121 boys) completed Implicit Association Tests and explicit self-report measures assessing the association of (a) me with male (gender identity), (b) male with math (math-gender stereotype), and (c) me with math (math self-concept). Two findings emerged. First, as early as second grade, the children demonstrated the American cultural stereotype that math is for boys on both implicit and explicit measures. Second, elementary school boys identified with math more strongly than did girls on both implicit and self-report measures. The findings suggest that the math-gender stereotype is acquired early and influences emerging math self-concepts prior to ages at which there are actual differences in math achievement. 相似文献
162.
Bret G. Range Susan Scherz Carleton R. Holt Suzanne Young 《Educational Assessment, Evaluation and Accountability》2011,23(3):243-265
The intent of this study was to assess the perceptions and actions of Wyoming principals concerning their role in supervising and evaluating teachers. A survey was sent to all 286 principals in the state of Wyoming, of which, 143 returned surveys, a response rate of 50%. Findings suggested that principals utilized supervisory behaviors more often than evaluative behaviors. Elementary principals perceived their evaluative practices as significantly more prevalent than secondary principals. Furthermore, principals indicated that their greatest frustrations in supervising teachers were time, the evaluation instrument, and teachers’ unwillingness to change. Additionally, findings suggested that Wyoming principals utilized classroom walkthroughs because they provided a snapshot of teaching and provided a medium for providing feedback. In regards to developmental supervision, principals indicated that novice teachers received much more supervision than veteran teachers. However, their reported use of differentiated supervision only applied to teacher autonomy concerning professional development goals. Principals reported that teachers had little input concerning the methods by which they were supervised. Finally, a majority of the Wyoming principals felt that improvement plans were effective at changing mediocre teaching behaviors, but 40% were speculative that such plans truly remediated poor teachers. 相似文献
163.
164.
van Ijzendoorn MH Moran G Belsky J Pederson D Bakermans-Kranenburg MJ Kneppers K 《Child development》2000,71(4):1086-1098
Do siblings develop similar attachment relationships with their mother? Attachment theory suggests that brothers and sisters growing up in the same family are likely to relate in similar ways to their parents, at least when parental attachment representations and interactive styles remain stable across time. In the current study, sibling attachment data from three research groups (from Pennsylvania State University, Leiden University, and the University of Western Ontario) have been pooled to assemble a sufficiently large sample of observations (N = 138 sibling pairs) for a detailed comparison of sibling attachment relationships. Spacing between the births, differences in maternal sensitivity, and gender of siblings were examined as possible sources of concordance of nonconcordance. Attachment security (including disorganized attachment) of each sibling was assessed with the Strange Situation procedure between 12 and 14 months after birth. Maternal sensitivity was observed with the same rating scale in a laboratory play session in one of the studies and in home observations in the others. Sibling relationships were found to be significantly concordant when classified as secure/nonsecure (62% concordance, p < .01, 1-tailed, intraclass correlation = .23) but not when further subcategorized. Maternal insensitivity to both siblings (shared environment) was associated with concordance of sibling nonsecurity. Siblings of the same gender were more likely to form concordant relationships with their mother (68%; p < .01, 1-tailed, intraclass correlation = .37) than those of opposite gender. Same-sex sibling concordance was comparable to the concordance found for monozygotic twins in earlier studies. Genetic factors may, therefore, play a relatively small role in the development of attachment. 相似文献
165.
OBJECTIVE: Data from two independent studies is presented, representing the investigators' ongoing work with faculty from a state criminal justice academy to analyze existing knowledge and skill levels among veteran law enforcement officers and recruits, as well as to enhance future training. METHOD: Through an anonymous questionnaire, the first of these studies examined officers' perceptions of maltreatment, including those factors that do and do not influence a determination of whether a particular act constitutes child maltreatment and assessments of whether particular acts constitute abuse or neglect. The second study also utilized an anonymous questionnaire to examine officers' knowledge of the developmental strengths and limitations of children relative to their ability to provide accurate information in suspected cases of child maltreatment. RESULTS: As hypothesized, several gaps both in law enforcement officers' knowledge of certain characteristics that can serve to denote a case of maltreatment and their knowledge of fundamental developmental issues and interview techniques that could assist them in the performance of their professional duties are identified. CONCLUSIONS: Suggestions for enhanced law enforcement training programs are presented and discussed. 相似文献
166.
Smith DW Letourneau EJ Saunders BE Kilpatrick DG Resnick HS Best CL 《Child abuse & neglect》2000,24(2):273-287
OBJECTIVE: This study sought to gather representative data regarding the length of time women who were raped before age 18 delayed prior to disclosing such rapes, whom they disclosed to, and variables that predicted disclosure within 1 month. METHOD: Data were gathered from 3,220 Wave II respondents from the National Women's Study (Resnick, Kilpatrick, Dansky, Saunders, & Best, 1993), a nationally representative telephone survey of women's experiences with trauma and mental health. Of these, 288 retrospectively reported at least one rape prior to their 18th birthday. Details of rape experiences were analyzed to identify predictors of disclosure within 1 month. RESULTS: Fully 28% of child rape victims reported that they had never told anyone about their child rape prior to the research interview; 47% did not disclose for over 5 years post-rape. Close friends were the most common confidants. Younger age at the time of rape, family relationship with the perpetrator, and experiencing a series of rapes were associated with disclosure latencies longer than 1 month; shorter delays were associated with stranger rapes. Logistic regression revealed that age at rape and knowing the perpetrator were independently predictive of delayed disclosure. CONCLUSIONS: Delayed disclosure of childhood rape was very common, and long delays were typical. Few variables were identified that successfully predicted disclosure behavior, but older age and rape by a stranger were associated with more rapid disclosure. This suggests that the likelihood of disclosure in a given case is difficult to estimate, and predictions based on single variables are unwarranted. 相似文献
167.
The rationale for career education is linked to the current transformations in the concepts and structures of work and of career, and the need to enable individuals not to choose but to construct their career. Current career education provision in the UK and in other European countries is described. A number of key issues are addressed: timing, content, method, models of delivery, progression and assessment. It is argued that clearer evidence on these issues, based on cross-national studies, is required. This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
168.
Antecedents and behavior-problem outcomes of parental monitoring and psychological control in early adolescence 总被引:27,自引:0,他引:27
The early childhood antecedents and behavior-problem correlates of monitoring and psychological control were examined in this prospective, longitudinal, multi-informant study. Parenting data were collected during home visit interviews with 440 mothers and their 13-year-old children. Behavior problems (anxiety/depression and delinquent behavior) were assessed via mother, teacher, and/or adolescent reports at ages 8 through 10 years and again at ages 13 through 14. Home-interview data collected at age 5 years were used to measure antecedent parenting (harsh/reactive, positive/proactive), family background (e.g., socioeconomic status), and mother-rated child behavior problems. Consistent with expectation, monitoring was anteceded by a proactive parenting style and by advantageous family-ecological characteristics, and psychological control was anteceded by harsh parenting and by mothers' earlier reports of child externalizing problems. Consistent with prior research, monitoring was associated with fewer delinquent behavior problems. Links between psychological control and adjustment were more complex: High levels of psychological control were associated with more delinquent problems for girls and for teens who were low in preadolescent delinquent problems, and with more anxiety/depression for girls and for teens who were high in preadolescent anxiety/depression. 相似文献
169.
170.